Comparison

FAC Gravity vs PNEUMATIC

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FAC Gravity

Create unique audio effects like Barberpole glissandos, spectral illusions, and evolving echoes. This frequency shifter offers stereo or mono processing with customizable feedback loops and modulation for dynamic sound design.

Highlights
  • Barberpole glissandos and spectral illusions
  • Stereo or mono frequency shifting
  • Spiral feedback loop with delay and filtering
  • Modulation matrix with LFO and envelope follower
  • Tempo-synced or MIDI-driven effects
  • Dry/wet mix and optional limiting
Features
Read full description

FAC Gravity AUv3 Plugin is a frequency shifter for creating Barberpole and Shepard style glissandos, spectral illusions, stereo rotation, chorusing, phasing, evolving echoes, infinite cosmic spaces, and all the combinations you’ll make. The plugin gives you two ways to process the audio source. In Stereo mode, each channel is shifted independently, with a Ratio control determining how closely their frequency shifts align. In Mono mode, FAC Gravity extends the internal quadrature processing to create a wide stereo image from the mono source. The frequency shift can move up or down, from subtle to more extreme spectral transformations. You can set the amount in Hz for classic Bode-style frequency shifting, make it follow your host tempo for rhythmic patterns, or even control it from MIDI notes for a more hands-on approach. A new dimension appears when you let the shifter feed back into itself with Spiral, a customizable loop with delay, blur, filtering, and different characters that shape how the sound circles, smears, interacts, and evolves over time. The result can range from bubbling textures to infinite sustained tones and noisy analog self-oscillation. Each character takes the feedback somewhere different. To dive deeper into new sonic dimensions, FAC Gravity comes with its own modulation module. The LFO, envelope follower, and flexible modulation matrix let you animate most parameters, from subtle evolving movements to complex, rhythmically reactive changes. You can even make the stereo field animate and rotate continuously by making the Width, Phase, and Pan parameters spin! You can shape the effect further by blending the processed signal with the original, while the optional limiter keeps the most extreme combinations in check. • Barberpole glissandos, spectral illusions, rotating stereo, evolving echoes • Dual Frequency Shifting, or Mono Shifting with Quadrature Stereo Widening • Organic Spiral Loop, from gentle feedback to pure analog self-oscillation • Integrated delay, diffusion blur, and independent low/high filtering • Modulation matrix, multi-source envelope follower • LFO with classic waveforms and random spline • Spinning modulation to rotate and animate the stereo field • Tempo-synced or MIDI-driven Frequency Shift, LFO, and Delay • Dry/Wet mix, optional limiting, and goniometer visualization • Advanced Responsive Design, portrait and landscape views • Universal Purchase: AUv3 for iOS (iPad/iPhone), macOS and Vision Pro The documentation is available at fredantoncorvest.com/FAC_Gravity.html This is an AUv3 Effect and requires a compatible host to work The in-app purchases are for tipping only, the app is fully functional without them

About

PNEUMATIC

This app simulates a unique valve pressure synthesizer, allowing users to control pressure, tune resonance, and add buzzing whistles. It can be played directly on screen or with a MIDI keyboard, offering a distinctive soundscape.

Highlights
  • Pressure control
  • Resonant tuning
  • Buzzing whistle effect
  • MIDI keyboard support
  • Save and load presets
  • AUv3 instrument
Read full description

PNEUMATIC is a valve pressure synth from NOIDED Industries. Push the lever and pressure builds in the tank. The pipe starts to whistle, the leak screams higher and the gauge climbs. Let go and it slams back, bleeding off into silence. Push it all the way across and it latches for a sustained drone. PRESSURE sets how hard the tank fills. PIPE tunes the resonant noise. LEAK adds a buzzing whistle that rises with the pressure. BLEED decides how fast it all drains away. No extra hardware needed. Everything is played on screen. If you want, any standard MIDI keyboard or MIDI app can also play it, with every note transposing the whole machine. Play it from a MIDI keyboard and every note transposes the whole machine. Velocity and aftertouch push the lever for you. Standalone app and AUv3 instrument Full MIDI CC control of every parameter Optional MIDI keyboard support (velocity, aftertouch, mod wheel)Keyboard, velocity, aftertouch and mod wheel control Save and load your own presets Works in AUM, GarageBand, Cubasis and other AUv3 hosts Made in Rochdale, UI elements photographed from local industrial areas. STAY NOIDED.

Screenshots

FAC Gravity4 screens
PNEUMATIC4 screens

Verdict

The call

The clearest difference is price: PNEUMATIC at Free against FAC Gravity's $9.99. PNEUMATIC also leads on in-app purchases (none vs 3) and iOS requirement (15.6 vs 17.0). On rating, ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

PNEUMATIC is free to download; FAC Gravity costs $9.99 up front. FAC Gravity sells 3 one-off in-app purchases. PNEUMATIC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for FAC Gravity against 5.0 for PNEUMATIC. Both are backed by a comparable volume of ratings — 7 and 4 respectively.

Scorecard4 real differences · 5 level
FAC Gravity versus PNEUMATIC: the parameters behind the verdict, then further details
ParameterFAC GravityPNEUMATIC
Price$9.99Free — better
Rating4.9 (7 ratings)5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings7 — better4
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.015.6 — better
Further details — not scored
Size4 MB16 MB
Age rating4+4+
DeveloperFrederic CorvestAnthony Moran

In-app purchases

3 purchases

FAC Gravity

One-time3
  • Small Tip$1.99
  • Medium Tip$4.99
  • Large Tip$14.99
None

PNEUMATIC

No in-app purchases

Questions

Is FAC Gravity free?
FAC Gravity costs $9.99, and also offers in-app purchases.
Is PNEUMATIC free?
PNEUMATIC is free to download, with no in-app purchases.
Which has better reviews, FAC Gravity or PNEUMATIC?
PNEUMATIC is rated higher. FAC Gravity averages 4.9 out of 5 from 7 ratings, while PNEUMATIC averages 5.0 from 4 ratings.
Do FAC Gravity or PNEUMATIC have ads?
Neither FAC Gravity nor PNEUMATIC shows ads.

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